Heidi Murkoff

Heidi Murkoff (born November 28, 1958) is the co-author of the What to Expect When You're Expecting series of pregnancy guides. She is also the creator of WhatToExpect.com and founder of the What to Expect Project. What to Expect series Murkoff conceived the idea for What to Expect When You're Expecting during her first pregnancy, when she could not find answers to her questions in books she consulted. Hours before having her daughter Emma, Heidi delivered the proposal for a pregnancy guide. What to Expect When You're Expecting has printed more than 22 million copies as of June 2023. Currently in the 20th printing of its 5th edition, it became the longest-running title of all time on The New York Times Best Seller list in June 2015, a record it still holds.